Supporting-crane



(No Model.)

PfA. KIRBY. SUPPORTING CRANE.

Patented Nov. 2 1,

UNITED STATES.

PATENT QFFICE.

FITZ A. KIRBY, OF WYANDOTTE, MICHIGAN.

SUPPORTING-CRANE.

SPECIFICATION forming part of Letters Patent Nd 509,227, dated November21, 1893. Application filed March 3, 1892. Serial No. 423,573. (Nomodel.)

To all whom it may concern:

Be it known that 1, FITZ A. KIRBY, a citizen of the United States,residing at Wyandotte, county of Wayne, State of Michigan, have inventeda certain new and useful Improvement in Supporting-Cranes; and I declarethe following to be a full, clear, and exact description of theinvention, such as will enable others skilled in the art to which itappertaius to make and use the same, reference being had to theaccompanying drawings, which form a part of this specification.

My invention relates to certain new and useful improvements in asupporting crane or standard for various uses, and consists of thedevices and appliances hereinafter specified and claimed and illustratedin the accompanying drawings, in which- Figure l is a vertical sectionshowing my invention. Fig. 2 is a plan view of the clamping device,showing the standard in section. Fig. 3 is a separate view of the weightin section.

The object of my invention more particularly is to provide a portablecrane or standard for supporting any desired device, as for example anincandescent lamp, which may readily be attached to any desired article,as a desk, table or chair, and whereby the article supported thereby maybe adjusted in various positions vertically and horizontally as may berequired.

I have shown my invention in the drawings submitted herewith applied toa table Aand supporting an incandescent electric lamp B.

I carry out my invention as follows:

0 represents a hollow standard or crane, preferably constructed of apiece of piping with a curved upper extremity, as shown to carry thelamp or other article supported thereby forward of the upright portionof the crane.

D is any suitable clamping device having a movable engagement upon saidstandard and held in any desired position thereupon by suitable means,as by a set screw d. A set screw d is employed to bind the clampingdevice upon the table.

By forming the crane or support of round material with its upper endcurved as shown,

its straight or vertical portion can be rotated axially and clamped atany desired point of its rotation, and can be vertically adjusted, thusenabling the article being suspended from the upper end of the crane tobe swung around in a circle with the clamp as a center and also besecured at any height relatively to the clamp or object to which thesame is secured.

E denotes a suspending cord or cable passed through the hollow standard.At the upper end of the standard the cord is passed over a pulley clocated in the standard, the standard being enlarged at that point toform a housing for the pulley. In the lower end of the standard islocatedamovable weight with which the cord is connected. It willbeevident that the cord will have contact with the inner surface of thestandard producing more or less friction, which will to some extentdiminish the weight required, the weight being simply sufficient to holdin suspension any article supported by the upper end of the cord,allowing said article to be adjusted up or down by the movement of theweight in the base of the standard.

As shown in the drawings, where an electric lamp is connected with thecord, the cord constit utes or consists of an electric insulated cable.The cable in this case passes through the weight as shown in Fig. 3.

The weight preferably consists of a smaller pipe than the standard, withits lower end closed except a small opening through which the wire orcord passes. As thus constructed the Weight may be filled with anydesired material and as the cord passes through its lower end and out atthe lower end of the support, the weight can be drawn down out of thesupport at any time and the amount of material in it can be changed tocorrespond with the weight of the article to be supported, after whichit can be drawn back into the support out of the way. This constructionwill also permit of the Weight and cord being drawn up in the supportany desired distance to accommodate'the vertical adjustment of thearticle being supported. The weight may be secured to the cord or wireat any desired point by means of a knot 100 which will engage with thebottom of the weight and hold it at that point. I do not however limitmyself to any particular manner of forming the weight.

Instead of a lamp, anything else desired may be suspended from the cordpassing through the upper extremity of the standard. In such a case thecord might be provided with any desired attaching device.

It will be evident that as so constructed the lamp or other article maybe suspended at any desired height. The standard may also be turned inthe clamping device to or fro as required.

The lamp or other suspended article is also adjustable vertically so asto be readily raised or lowered as circumstances or convenience demand.

It will be seen that such a crane or standard is light, easily movedfrom place to place, and readily adjusted vertically or laterally, asmay be desired.

What I claim as my invention is 1. The combination, with a hollow, openended support or standard, of means intermediate the ends of the supportfor adj usting the same vertically or axially, anda cord through thestandard and longitudinally movable relatively thereto, independent ofthe movement of the support, of a weight secured to said cord, withinthe standard, and the upper end of the cord projecting from the standardand adapted to receive an article to lfoe suspended therefrom,substantially as set orth.

2. The combination with a round, hollow support or standard, the upperend of which is gradually curved and provided with a pulley, of a cordthrough the standard, provided with aweight, and a clamp, one end ofwhich engages with the support or standard, intermediate its ends andholds it in its vertical or axial adjustment, and the other end isadapted to engage with a support, as atable, substantially as set forth.

In testimony whereof I sign this specification in the presence of twowitnesses.

V FITZ A. KIRBY.

Witnesses: V

N. S. WRIGHT, JOHN F. MILLER.

